A. Linearly as the viscosity
B. Inversely as the pressure drop
C. Inversely as the viscosity
D. As the square of the radius
A. Not a function of the roughness of pipe wall
B. Inversely proportional to Reynolds number
C. Both A. & B.
D. Neither A. nor B.
A. A storage device and a control valve
B. A cylinder and a plunger
C. Two pistons and two cylinders
D. A storage tank and a ram pump
A. Decreasing the size of the inlet pipe
B. Increasing the size of the inlet pipe
C. Lowering the pump position
D. Both B. and C.
A. Froude
B. Euler
C. Reynold
D. Mach
A. Mean flow velocity is about 0.5 times the maximum velocity
B. Velocity profile becomes flatter and flatter with increasing Reynolds number
C. Point of maximum instability exists at a distance of 2r/3 from the pipe wall (r = pipe radius)
D. Skin friction drag, shear stresses, random orientation of fluid particles and slope of velocity
profile at the wall are more
A. 0.1
B. 0.55
C. 0.95
D. 1.85
A. Gravitational & buoyant
B. Centrifugal & drag
C. Gravitational or centrifugal buoyant drag
D. External, drag & viscous
A. Rate of transfer of molecular momentum
B. Cohesion
C. Both A. and B.
D. Neither A. nor B.
A. Df + Bf = Wf
B. Df = Bf + Wf
C. Df + Bf + Wf =0
D. None of these